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. Author manuscript; available in PMC: 2019 Mar 15.

Published in final edited form as: Pet Sci Technol. 2017 Nov 28;35(19):1917–1924. doi: 10.1080/10916466.2017.1370476

Table 1.

Signal-to-noise ratio (S/N) comparison for asphaltene ionic species obtained using LDI and SALDI.

m/z	Signal-to-Noise Ratios (S/Ns)
m/z	LDI	NiO	Fe₃O₄	Co₃O₄
375.50	5.41	15.78	11.62	5.45
397.25	11.14	33.23	22.88	13.14
419.05	17.09	35.56	24.75	10.48
439.25	14.85	24.70	31.25	15.63
461.00	15.46	33.15	30.40	16.69
479.55	17.48	39.81	33.85	14.94
482.55	19.83	46.98	36.64	18.17
488.80	13.85	35.86	23.68	9.83
501.44	14.86	39.11	76.12	12.06
504.30	25.77	54.60	51.80	22.45
519.80	15.06	38.96	31.01	17.80
526.00	16.38	49.79	32.93	12.22
541.30	37.81	93.50	50.22	33.91
547.55	19.54	50.18	25.16	10.22
572.30	10.52	23.10	17.40	8.65